Compilare: main.cpp: In function 'int main()': main.cpp:29:21: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(S[i][j] < S[i][k] + S[k][j]); ^~ main.cpp:30:25: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' S[i][j] = S[i][k] + S[k][j]; ^ main.cpp:6:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rf.in", "r", stdin); ^ main.cpp:7:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rf.out", "w", stdout); ^ main.cpp:8:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:11:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &M[i][j]); ^