Easy solution using java(beats 100% of the users with java)
\n# Code\n\nclass Solution {\n    public int countSeniors(String[] details) {\n        int count=0;\n        for(int i=0;i<details.length;i++){\n            if(
\n# Code\n```\nclass Solution {\n    public int countSeniors(String[] details) {\n        int count=0;\n        for(int i=0;i<details.length;i++){\n            if(details[i].charAt(11)-\'0\'>6){\n                count++;\n            }\n            else if(details[i].charAt(12)-\'0\'>=1  && details[i].charAt(11)-\'0\'==6)\n            count++;\n        }\n        return count;\n    }\n}\n```
['Java']